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[HBase](http://hbase.apache.org) can be used as the backend of the event data
repository.

Download HBase from a [mirror](http://www.apache.org/dyn/closer.cgi/hbase/<%=
data.versions.hbase_version %>/<%= data.versions.hbase_basename %>-<%=
data.versions.hbase_variant %>.tar.gz). Extract HBase by following the example
below.

```
$ tar zxvfC <%= data.versions.hbase_basename %>-<%= data.versions.hbase_variant %>.tar.gz PredictionIO-<%= data.versions.pio %>/vendors
```

INFO: If you decide to install HBase to another location, you must edit
`PredictionIO-<%= data.versions.pio %>/conf/pio-env.sh` and change the
`PIO_STORAGE_SOURCES_HBASE_HOME` variable to point to your own HBase
installation.

You will need to at least add a minimal configuration to HBase to start it in
standalone mode. Details can be found
[here](http://hbase.apache.org/book/quickstart.html). Here, we are showing a
sample minimal configuration.

INFO: For production deployment, run a fully distributed HBase configuration.

Edit `PredictionIO-<%= data.versions.pio %>/vendors/<%=
data.versions.hbase_basename %>/conf/hbase-site.xml`.

```
<configuration>
  <property>
    <name>hbase.rootdir</name>
    <value>file:///home/abc/PredictionIO-<%= data.versions.pio %>/vendors/<%= data.versions.hbase_basename %>/data</value>
  </property>
  <property>
    <name>hbase.zookeeper.property.dataDir</name>
    <value>/home/abc/PredictionIO-<%= data.versions.pio %>/vendors/<%= data.versions.hbase_basename %>/zookeeper</value>
  </property>
</configuration>
```

INFO: HBase will create `hbase.rootdir` automatically to store its data.

Edit `PredictionIO-<%= data.versions.pio %>/vendors/<%=
data.versions.hbase_basename %>/conf/hbase-env.sh` to set `JAVA_HOME` for the
cluster. For example:

```
export JAVA_HOME=/usr/lib/jvm/java-8-oracle/jre
```

For Mac users, use this instead (change `1.8` to `1.7` if you have Java 7
installed):

```
export JAVA_HOME=`/usr/libexec/java_home -v 1.8`
```
